element-hq/synapse

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Synapse: Matrix homeserver written in Python/Twisted + Rust

Stars: 4.6k
Forks: 600
Open beginner issues: 0
Indexed issues: 1.9k
Avg merge: 5d 6h
Merged PRs (30d): 46

Dominant language: Python
License: AGPL-3.0
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Open All

1882 open issues indexed

We need a config option to make new rooms unfederatable by default on a server (SYN-583) Open

A-Federation T-Enhancement

element-hq/synapse#1466 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Users can't set a room's canonical alias if they are connected from a different server to that of the alias (SYN-609) Open

O-Occasional S-Tolerable T-Defect

element-hq/synapse#1484 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Rooms can get into a very confused state where guests' join requests are 200ed but never actually joined (SYN-623) Open

A-Guests A-Join O-Uncommon S-Minor T-Defect

element-hq/synapse#1492 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Debian package for ARM CPUs (SYN-628) Open

A-Packaging T-Enhancement

element-hq/synapse#1496 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Using a non-room ID `/rooms/<room_id>/` APIs should 400 (SYN-629) Open

A-Spec-Compliance O-Uncommon S-Tolerable T-Enhancement Z-Help-Wanted

element-hq/synapse#1497 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
/sync gives bad prev_batch token for unlimited timelines (SYN-645) Open

A-Sync S-Minor T-Defect

element-hq/synapse#1509 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
We need a tool to help debug TURN setups (SYN-661) Open

T-Enhancement

element-hq/synapse#1519 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Search should be accent insensitive (SYN-666) Open

A-I18n A-Message-Search A-Search T-Enhancement

element-hq/synapse#1523 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Error when trying to join an empty room should be more explicit (SYN-678) Open

A-Join T-Defect

element-hq/synapse#1533 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Make search terms optional? (SYN-681) Open

A-Message-Search A-Search S-Minor T-Enhancement

element-hq/synapse#1534 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Should we return m.presence events in /sync at all for offline users? (SYN-682) Open

A-Presence A-Spec-Compliance T-Defect

element-hq/synapse#1535 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
stderr goes to /dev/null when we run with `--daemonize` Open

A-Logging O-Uncommon S-Major T-Defect Z-Help-Wanted

element-hq/synapse#1539 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Consider using pillow-simd to speed up thumbnailing on x86-64 architecture (SYN-691) Open

A-Media-Repository A-Performance T-Enhancement

element-hq/synapse#1544 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
3pid invite fails with a 500 if the IS returns a 500 (or is unreachable) Open

O-Uncommon S-Tolerable T-Enhancement

element-hq/synapse#1549 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
if remote media cache is deleted on the fs, the server should notice and redownload (SYN-709) Open

A-Media-Repository S-Minor T-Defect

element-hq/synapse#1555 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Peeking into rooms doesn't work over federation (SYN-715) Open

S-Major T-Enhancement

element-hq/synapse#1559 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Trim leading/trailing spaces when loading keywords for highlighting (SYN-740) Open

O-Uncommon S-Minor T-Defect

element-hq/synapse#1575 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
It's very confusing that if you try to /register with an m.login.password auth type, you just get back 'M_MISSING_PARAM' with no reason (SYN-751) Open

S-Tolerable T-Enhancement

element-hq/synapse#1584 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Consider a --disable-legacy-apis option (SYN-752) Open

T-Enhancement

element-hq/synapse#1585 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Need to consider how to filter out m.call.* events from group rooms (SYN-755) Open

S-Major T-Enhancement

element-hq/synapse#1588 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
reject state events when sent via the non-state API (SYN-783) Open

P4 T-Task

element-hq/synapse#1608 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Ability to destroy Private Rooms and Messages where users are from the same home server. Open

A-Retention T-Enhancement

element-hq/synapse#1647 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
synchrotron sometimes returns stale presence Open

A-Presence A-Sync T-Defect

element-hq/synapse#1658 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Switch to using V2 for peeking and kill V1 API entirely Open

T-Task Z-Spec-Blocked

element-hq/synapse#1688 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
adopt new Twisted TLS APIs Open

T-Enhancement

element-hq/synapse#1691 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
/thirdparty/protocols API should be accessible over federation Open

element-hq/synapse#1706 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
We should use asynchronous loggers with python logging Open

A-Logging T-Enhancement

element-hq/synapse#1727 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
backfilling missing events when receiving a federation txn blocks all other txns for that room Open

A-Federation A-Performance O-Occasional S-Minor T-Defect

element-hq/synapse#1729 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
'extrem' is misppelt throughout the schema as 'exterm'. Open

A-Database O-Uncommon S-Tolerable T-Defect

element-hq/synapse#1754 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
make ../version return full version info, including git branchy stuff, to match the Server header Open

A-Federation T-Enhancement

element-hq/synapse#1780 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Room invite: Forbid multiple invitation to the same email of a non matrix enabled contact Open

A-Invite O-Uncommon S-Tolerable T-Defect

element-hq/synapse#1817 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`prune_event` strips keys needed for authentication from events. Open

S-Minor T-Defect

element-hq/synapse#1831 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
If push falls behind, we can meltdown whilst trying to catch up Open

A-Push O-Uncommon S-Tolerable T-Enhancement

element-hq/synapse#1838 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
The /search request no longer finds attachments Open

A-Message-Search A-Search

element-hq/synapse#1851 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Anonymization of password recovery emails on homeservers Open

P5 S-Tolerable T-Enhancement

element-hq/synapse#1880 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Use YAML parser implementing YAML 1.2 rather than 1.1 Open

A-Config T-Enhancement

element-hq/synapse#1885 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Implement UUID scheme for users to allow changing usernames Open

element-hq/synapse#1948 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Server Owners Should Be Able to Have Admin Rights on Any Room and Block More Rooms from Being Created Open

A-Create-Room T-Enhancement

element-hq/synapse#1970 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Duplicate `m.room.create` event in the timeline in the response to `/sync` Open

A-Sync O-Frequent S-Minor T-Defect

element-hq/synapse#1995 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Cannot start a chat with a user if domain contains uppercases Open

A-Create-Room A-Validation T-Defect

element-hq/synapse#1999 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
GnuPG-signed releases Open

A-Packaging O-Uncommon S-Minor Security T-Enhancement

element-hq/synapse#2036 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
consider only allowing users who share an encrypted room with you to query your devices Open

A-Device-List-Tracking T-Enhancement

element-hq/synapse#2038 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
We should create JPG thumbnails of PNGs, not PNG thumbnails Open

A-Media-Repository A-Performance O-Occasional S-Tolerable T-Enhancement

element-hq/synapse#2045 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
500 error when inviting user on unreachable HS Open

A-Federation A-Invite T-Defect z-bug

element-hq/synapse#2047 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Heuristic email notification links to the 'right' client for users with only one client rather than matrix.to Open

A-Push S-Tolerable T-Enhancement

element-hq/synapse#2059 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Can't join rooms as a guest over federation until a real user has joined that room from the same homeserver Open

A-Federated-Join A-Federation A-Guests T-Defect

element-hq/synapse#2065 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Fault-tolerant Matrix setup Open

A-Workers T-Enhancement

element-hq/synapse#2068 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
When users change their identity mappings or other credentials we should warn all their known contact details. Open

O-Uncommon S-Tolerable Security T-Enhancement

element-hq/synapse#2093 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Allow Devices to have an Expire time? Open

A-Device-List-Tracking T-Enhancement

element-hq/synapse#2105 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Using an external cache server Open

T-Task

element-hq/synapse#2123 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026

element-hq/synapse

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